The Central Bureau of Investigation on Friday took over the probe into the Birbhum killings hours after Calcutta High Court directed the central agency to replace the state investigation team formed by the West Bengal government to look into the gruesome mass murder.

Earlier in the day, observing that the burning of eight people in Bogtui village in Bengal's Birbhum district earlier this week has shaken the conscience of society, Calcutta High Court directed the CBI to take over the investigation and submit a report by the next date of hearing, which was set for April 7.

The high court, which has been hearing a suo motu petition in the case since Wednesday, said that facts and circumstances demanded the investigation be handed over to CBI to instill confidence in society.

The agency has already dispatched a team, along with eight experts from Central Forensic Science Laboratory (CFSL) who have visited the site of crime, officials said. Unknown assailants had thrown petrol bombs and set ablaze some 10 houses on fire in Bogtui village in the early hours of Tuesday, killing eight people including women and children, in a suspected fallout of the murder of a ruling Trinamool Congress deputy chief of the local panchayat.

While Opposition parties welcomed the high court order for CBI investigation into the violence alleging that the state police was trying to hush up the matter, the ruling TMC questioned whether CBI, which is under the union government, can be trusted to be impartial, claiming the BJP has been misusing central agencies.

The Mamata Banerjee-led party however said all cooperation would be extended to the CBI but there would be mass movements if the saffron party uses it to harass TMC leaders.

"We welcome the court's decision. Only a CBI probe can bring out the truth as the police, acting as agents of the ruling party, were trying to suppress the matter," state BJP chief Sukanta Majumdar said. While senior CPI(M) leader Sujan Chakraborty said his party was hopeful that the CBI would carry out a fair probe.

However, TMC state general secretary and spokesperson Kunal Ghosh said the state government had so far done everything to unravel the truth and arrested a number of people and added, "We have seen how CBI has been used by the ruling dispensation to corner the opposition parties. So, we don't feel that the CBI is an impartial agency.

For good measure, he added that if BJP tries to use the CBI investigation to harass our leaders, there would be mass movements."

The High Court bench while passing the judgement ordering CBI to take over the probe had said that it found that though the SIT was constituted on March 22, "till now (March 25) there is no effective contribution of the SIT in the investigation". The court, however, did not divulge details of the shortcomings in the SIT probe.

Meanwhile, TMC leader and former Rampurhat block-1 president Anarul Hossain who was arrested Thursday in connection with the killings claimed that he had surrendered before police. "I surrendered before the police after 'Didi' (Chief Minister Mamata Banerjee) instructed me to do so," Hossein said while he was being taken to a court here, where he was remanded to 14 days police custody.

Police had Friday arrested Hossein from outside a hotel in the pilgrimage town Tarapith by tracking down his mobile phone after failing to find him at either his home or office, hours after Banerjee had directed it to nab the TMC leader if he did not surrender before then.

The state police on Friday also recovered a huge cache of arms and explosives from various parts of the state, a day after the chief minister ordered them to throw a dragnet and unearth all illicit arms caches. We have recovered caches of illegal weapons from various districts of the state, including Birbhum, West Midnapore. The weapons have been seized, and the crude bombs have been defused by the CID and police bomb disposal squad. Several people have also been arrested, a senior police official said.

The official, however, said they are yet to compile the arrest figures across the state.

Meanwhile, members of the state's intelligentsia hit the streets of Kolkata in protest against Birbhum killings. Movie directors, academics, painters, students joined a rally sans political flags to walk through busy city thoroughfares to protest the burning of eight people in Bogtui village. "Our demand is that the perpetrators of the heinous crime are apprehended and brought to justice," Academician Pabitra Sarkar said. While film director Kamaleswar Mukhopadhyay said that people should rise above political and personal interests and join the protests against the killings.

Kunal Ghosh File Picture

Anubrata's understanding of politics superior: TMC's Kunal Ghosh in swipe at party colleague on Birbhum carnage remarks

TMC state general secretary Kunal Ghosh on Saturday took a jibe at party colleague Anubrata Mondal for his remarks over the probe into the Birbhum killings, saying he is a big leader whose political understanding is superior. Mondal, the Birbhum district president, had said the police case should be prepared like it was done during the Nanoor massacre in 2001, when 11 landless labourers aligned to the TMC were burnt to death, so that the culprits are brought to book.

Anubrata Mondal is a very big leader. His understanding (of politics) is more (than mine). I don't wish to make a comment on his remarks, Ghosh said. Mondal, however, declined to comment on what Ghosh said.

Mondal's remarks on the Birbhum killings have drawn widespread criticism, with opposition parties wondering how a party leader can talk about police investigation into a criminal case. Sources in the ruling Trinamool Congress said his comments have caused embarrassment for the party. Mondal is an excellent organiser. But, his statement has done more harm than good, a senior TMC leader said.

Opposition BJP mocked the TMC for creating a larger than life image of Mondal in the district. It is due to the support of the TMC leadership and state administration that a larger than life image of Anubrata Mondal has been created over the years, BJP state spokesperson Samik Bhattacharya said. Unknown assailants had thrown petrol bombs and set ablaze some 10 houses in Bogtui village in the early hours of Tuesday, killing eight people including women and children.